Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:11:07 2012 Optimize a model with 43163 rows, 39402 columns and 167902 nonzeros Presolve removed 416 rows and 3566 columns Presolve time: 1.04s Presolved: 42747 rows, 35836 columns, 162916 nonzeros Variable types: 0 continuous, 35836 integer (35836 binary) Found heuristic solution: objective 198.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 24715 3.0000788e+00 7.549185e+01 0.000000e+00 5s 29351 3.0000843e+00 1.656869e+01 0.000000e+00 10s 33510 3.0000000e+00 0.000000e+00 0.000000e+00 14s Root relaxation: objective 3.000000e+00, 33510 iterations, 13.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 41s Explored 0 nodes (70568 simplex iterations) in 41.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%